Container closure with applicator rod and method of making the same



. Feb. 3, 1942. w. F. SCHMALZ CONTAINER CLOSURE WITH APPLICATOR ROD ANDMETHOD OF MAKING THE SAME Filed Aug. 25, 1939 f]: Van zar M'f/iamJEFF/7777a]? detailed construction for holding the Patented Feb. 3, i942rrrr CONTAINER CLOSURE WITH APYLICATOR. BOB AND METHOD OF THE SAMEWilliam F.

Colts Patent Fire pany, Hartford, Conn.,

necticut Schmalz, Rockville, Conn, assignor to Arms Manufacturing Comacorporation of Con- Application August 25, 1939, Serial No. 291,864

Claims. (01. 1403) The invention relates to a combined container closureand applicator rod, and more particularly to a container closure andapplicator rod which are both of rigid construction such as may beformed by molding a material of the synthetic resin class.

The primary object of the invention is to provide a combined containerclosure and applicator rod such that the parts thereof may be preformedto final shape prior to assembly and yet may be easily assembled in apositively interlocked relationship.

Another object is to provide a container closure and applicator rod ofthe above character in which at least the applicator rod is formed froma material of the synthetic resin class.

A further object of the invention is to provide a-method of making acombined closure and applicator rod of the above character.

From the following description further objects and advantages of theinvention will be apparent to those skilled in the art.

In the accompanying drawing I have shown two alternative embodiments ofthe invention, but it will be understood that the drawing is intendedfor illustrative purposes only and is not to be construed as defining orlimiting the scope of the invention, the claims forming a part of thisspeciflcation being relied upon for that purpose.

In the drawing:

Fig. 1 is an elevational view of a bottle provided with a combinedclosure and applicator rod incorporating the principles of theinvention.

Fig. 2 is a sectional view of the closure and applicator rod shown inFig. 1.

Fig. 3 is an enlarged fragmentary sectional view showing, in elevationand before assembly, the closure and applicator rod together.

Fig. 4 is a view similar to Fig. 3 but showing the closure andapplicator rod assembled.

Fig. 5 is a sectional view taken on the line 5-5 of Fi 4.

Figs. 6 and '7 are views similar to Figs. 3 and 4, respectively, showingan alternative construction incorporating the principles of theinvention,

Prior to this invention it has been usual to provide rigid containerclosures with applicator rods made of glass; however, many diflicultieshave been attendant upon the use of such rods. Among the troublesexperienced have been damage to the container closure effected while theglass was in a fused (plastic) condition, breakage of both closures androds during assembly, insecure connection between rods hold a liquid. At2 is shown a container closure if the assembly was r and closures, andthe necessity for expensive shipping cartons to prevent rod breakageduring transit. The present invention overcomes these objectionablefeatures. In accordance with the invention a preformed container closuremember and a preformed applicator rod member are provided, one of thesemembers having a rigid walled recessed formed therein and the othermember having a portion thereof positioned and secured within the saidrecess so that the members are normally inseparable. By preformed ismeant that the member is shaped to final form prior to its assembly withthe other member and by normally inseparable it is meant that themembers are positively secured against separation unless suflicientforce is applied to produce a distortion of some part of the assemblageto thus overcome the positive securement.

Referring to Fig. l, l represents a bottle or container of any desiredform which is adapted to member having a. sealing gasket 3 positionedtherein. An applicator rod member 4 is secured to'the closure member andthe rod is preferably provided at its lower end with aglobularapplicating portion 5.

Figs. 2, 3, 4 and one embodiment for positively securing the rod andclosure members together. In the illustrated construction the closuremember 2 which is preformed of any desired rigid material, preferablybeing molded from' a material of the synthetic resin class, is providedwith a screw thread 6 for securing it to the container I. A cylindricalflange I projects downward from the inner surface of the closure, thusforming a recess 8 therein. The side wall of the recess 8 is shouldered,preformed means such as one or ribs 9 projecting into the recess fromthe side wall thereof, being provided 'for this purpose. These ribsmaybe of any desired cross sectional shape, but when the closure is amolded one having the screw thread 6 the ribs-are preferably shaped asshown on an enlarged andexaggerated scale in 3. In actuality these ribsare preferably about .002 to .003 of an inch in height so that as theclosure is unscrewed from the mold the ribs are stripped from damaged.

When the closure member is formed as described, the upper end portion ofthe applicator rod member 4, which is preferably molded from a materialof the synthetic resin class which is more resistant to chemical actionand moisture 5 more particularly illustrate more integral I the moldwithout being absorption than the material from which the closurememberis formed, is provided with an enlargement or shouldering means in theform of oneor more preformedintegral ribs l0. These v ribs arepreferably shaped as shown.

The closure and rod members are assembled by merely placing, the ribbedend of the rod in the recess and then forcing the ribs l inward beyondthe ribs 9. This may be done while the members are at substantially thesame temperature and while in a non-plastic condition, and this withoutbreakage due to the slight inherent resilience of the members. I

In order to substantially prevent any relative pivotal movement betweenthe closure 2 and rod 4, one of these members is provided with one or'more projections, such as shown at II, which engage the other member.

While the now preferred embodiment is shown in Figs. 2, 3, 4 and 5, theprinciples of the invention may be incorporated in constructions quitedifferent in detail, and Figs. 6 and '7 illustrate, by way of example,one such alternative construction. Referring now to Figs. 6 and 7, acontainer closure is shown at 2. The closure is provided with a thread 6and a cylindrical flange 1 forming a recess 8. The side wall of therecess 8 is provided with preformed shoul-' dering means in the 'form ofa thread 9- and nib 9 The lead of the thread 9- is preferably the sameas that of thread 6'? so that the closure, if molded, can be readilyunscrewed from the mold without stripping either thread 6 0r 9 from themold. The nib 9 must be stripped from the mold and is, similarly to theribs 9' shown in Fig. 3, actually about .002 to .003 of an inch inheight.

When the container closure is provided with shouldering means such asthe thread 9 and nib 9 an applicator rod 4 is provided which preferablyhas shouldering means thereon such as shown. The illustrated shoulderingmeans comprises a pluralityof preformed integral projections I0, I0 lllM and 1 helically directed to form an interrupted screw thread. Theprojections I0, I 0 and "F are shownin Fig. 6 on the front side-of theapplicator rod and on the back side of Fig. 7.

The closure 2 and rod 4 are assembled by screwing the rod into therecess 8, the projection It) being forced over and beyond nib 9 as therod is fully seated in the recess (Fig. 7). Once assembled, it isapparent that the rod and closure cannot beseparated except by applyingforce thereto suflicient to distort them by forcing Ill over nib 9Projections ll similar to those shown at H in Fig. 3 may .be provided ifdesired to prevent relative pivotal movement of the closure and rod.

Various changes and modifications within the scope of the appendedclaims will be readily apparent to those skilled in the art.

I claim:

1. In combination, a container closure member molded from a material ofthe synthetic resin class, and an applicator rod member molded from amaterial of the synthetic resin class which is more resistant'tochemical action and moisture absorption than the material of the closuremember secured to said container closure member.

2. In combination, a rigid container closure member, and a rigidapplicator rod member, one of said members having a recess therein andthe other member having a portion thereof positioned within said recess,said members including interlocked preformed cooperating means forpositively preventing separation of the members upon relative separativemovement thereof in any direction.

3. In combination, a rigid container closure member, and a rigidapplicator rod member, one of said members having a recess therein andthe other member having a portion thereof positioned within said recess,said members including interlocked preformed cooperating means forpositively preventing separation of the members upon relative separativemovement thereof in any direction and being the sole meansfor-preventing such movement.

4. In combination, a. rigid container closure member, and a rigidapplicator rod member, one of said members having a recess therein andpreformed means projecting into the recess from a side wall thereof, theother member having a portion positioned within said recess and havingpreformed means thereon cooperatively interlocked with said first namedmeans for positively preventing separation of said members upon relativeseparative movement thereof in any direction.

'5. In combination, a rigid container closure member, and a rigidapplicator rod member, one of said members having a recess therein andhaving preformed means integral with the side wall thereof projectinginto said recess, the other member having a portion thereof positionedwithin said recess and including an integral preformed partcooperatively interlocked with said first named means for positivelypreventing separation of said members upon relative separative movementthereof in any direction.

6. In combination, a rigid container closure member and a rigidapplicator rod member, one of said members having a recess therein andhaving a preformed rib integral with the sidewall thereof and extendinginto the recess, the other member having a portion thereof positionedwithin said recess and having a preformed integral rib thereoncooperatively interlocked with said first-named rib for positivelypreventing removal of said portion from the said recess.

7. In combination, a rigid container closure member, and a rigidapplicator rod member, one

of said members having a recess therein and a preformed rib integralwith the side wall of and extending into the recess, the other memberhaving a portion thereof positioned within said recess and having apreformed. integral rib thereon cooperating with said first named rib tonormally prevent removal of said portion from the said recess, one ofsaid members including means spaced from its said rib and engaging theother member to prevent any substantial relative pivotal movement ofsaid members transversely of the longitudinal axis of the applicator rodmember.

8. In combination, a container closure molded from a material of thesynthetic resin class, said closure having a recess therein and a ribprojecting approximately .003 of an inch into said recess from the sidewall thereof, and an applicator rod having an end portion positioned insaid recess and having a rib thereon cooperatively interlocked. withsaid first named rib for positively preventing separation of the closureand rod upon relative separative movement thereof in any direction.

9. The method of making a combined container closure and applicator rodcomprising forming a rigid container closure having a shoulment onsaid'rodbeyond the shoulder of said recess to assemble the closure androd with said enlargement cooperatively interlocked with. said shoulderfor positively preventing separation of the container closure andapplicator rod upon relative separative movement thereof in anydirection.

10. The method of making a combined container closure and applicator rodcomprising molding from a synthetic resin material a rigid containerclosure having a shouldered recess therein, forming an applicator rodwith an integral enlargement adjacent one end. inserting the enlargedend of the applicator rod in said recess while maintaining the closureand rod at substantially the same temperature and in a nonplasticcondition, and forcing the enlargement on said rod beyond the shoulderof said recess to assemble the closure and rod, with said enlargementcooperatively interlocked with said shoulder for positively preventingseparation of the container closure and applicator rod upon relativeseparative movement thereof in any direc-- tion.

WILLIAM F. SCHMALZ.

